Abstract
Recent developments in additive manufacturing have demonstrated the potential for thermoset polymer feedstock materials to achieve high strength, stiffness, and functionality through incorporation of structural and functional filler materials. In this work, graphene was investigated as a potential filler material to provide rheological properties necessary for direct-write three-dimensional (3D) printing and electrostatic discharge properties to the printed component. The rheological properties of epoxy/graphene mixtures were characterized, and printable epoxy/graphene inks formulated. Sheet resistance values for printed epoxy/graphene composites ranged from 0.67 × 102 Ω/sq to 8.2 × 103 Ω/sq. The flexural strength of printed epoxy/graphene composites was comparable to that of cast neat epoxy (~ 80 MPa), suggesting great potential for these new materials in multifunctional 3D-printed devices.
| Original language | English |
|---|---|
| Pages (from-to) | 292-297 |
| Number of pages | 6 |
| Journal | JOM |
| Volume | 70 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1 2018 |
| Externally published | Yes |
Funding
This work was generously supported by the University of Tennessee and by Honeywell Federal Manufacturing and Technologies through Contract N000230945, administered by Dr. Jamie Messman. B. G. C. and R. C. P. would also like to acknowledge support from the Center for Materials Processing at the University of Tennessee.